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CVE-2020-36321: Path Traversal

April 23, 2021 (updated May 5, 2021)

Improper URL validation in development mode handler in com.vaadin:flow-server allows attacker to request arbitrary files stored outside of intended frontend resources folder.

References

  • nvd.nist.gov/vuln/detail/CVE-2020-36321
  • vaadin.com/security/cve-2020-36321

Code Behaviors & Features

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Affected versions

All versions starting from 2.0.0 through 2.4.1, all versions starting from 3.0 through 4.0

Fixed versions

  • 2.4.2

Solution

Upgrade to version 2.4.2 or higher.

Impact 7.5 HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Learn more about CVSS

Weakness

  • CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

Source file

maven/com.vaadin/flow-server/CVE-2020-36321.yml

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